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19#include "btrfs-tests.h"
20#include "../ctree.h"
21#include "../transaction.h"
22#include "../disk-io.h"
23#include "../qgroup.h"
24
25static void init_dummy_trans(struct btrfs_trans_handle *trans)
26{
27 memset(trans, 0, sizeof(*trans));
28 trans->transid = 1;
29 INIT_LIST_HEAD(&trans->qgroup_ref_list);
30 trans->type = __TRANS_DUMMY;
31}
32
33static int insert_normal_tree_ref(struct btrfs_root *root, u64 bytenr,
34 u64 num_bytes, u64 parent, u64 root_objectid)
35{
36 struct btrfs_trans_handle trans;
37 struct btrfs_extent_item *item;
38 struct btrfs_extent_inline_ref *iref;
39 struct btrfs_tree_block_info *block_info;
40 struct btrfs_path *path;
41 struct extent_buffer *leaf;
42 struct btrfs_key ins;
43 u32 size = sizeof(*item) + sizeof(*iref) + sizeof(*block_info);
44 int ret;
45
46 init_dummy_trans(&trans);
47
48 ins.objectid = bytenr;
49 ins.type = BTRFS_EXTENT_ITEM_KEY;
50 ins.offset = num_bytes;
51
52 path = btrfs_alloc_path();
53 if (!path) {
54 test_msg("Couldn't allocate path\n");
55 return -ENOMEM;
56 }
57
58 path->leave_spinning = 1;
59 ret = btrfs_insert_empty_item(&trans, root, path, &ins, size);
60 if (ret) {
61 test_msg("Couldn't insert ref %d\n", ret);
62 btrfs_free_path(path);
63 return ret;
64 }
65
66 leaf = path->nodes[0];
67 item = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_extent_item);
68 btrfs_set_extent_refs(leaf, item, 1);
69 btrfs_set_extent_generation(leaf, item, 1);
70 btrfs_set_extent_flags(leaf, item, BTRFS_EXTENT_FLAG_TREE_BLOCK);
71 block_info = (struct btrfs_tree_block_info *)(item + 1);
72 btrfs_set_tree_block_level(leaf, block_info, 1);
73 iref = (struct btrfs_extent_inline_ref *)(block_info + 1);
74 if (parent > 0) {
75 btrfs_set_extent_inline_ref_type(leaf, iref,
76 BTRFS_SHARED_BLOCK_REF_KEY);
77 btrfs_set_extent_inline_ref_offset(leaf, iref, parent);
78 } else {
79 btrfs_set_extent_inline_ref_type(leaf, iref, BTRFS_TREE_BLOCK_REF_KEY);
80 btrfs_set_extent_inline_ref_offset(leaf, iref, root_objectid);
81 }
82 btrfs_free_path(path);
83 return 0;
84}
85
86static int add_tree_ref(struct btrfs_root *root, u64 bytenr, u64 num_bytes,
87 u64 parent, u64 root_objectid)
88{
89 struct btrfs_trans_handle trans;
90 struct btrfs_extent_item *item;
91 struct btrfs_path *path;
92 struct btrfs_key key;
93 u64 refs;
94 int ret;
95
96 init_dummy_trans(&trans);
97
98 key.objectid = bytenr;
99 key.type = BTRFS_EXTENT_ITEM_KEY;
100 key.offset = num_bytes;
101
102 path = btrfs_alloc_path();
103 if (!path) {
104 test_msg("Couldn't allocate path\n");
105 return -ENOMEM;
106 }
107
108 path->leave_spinning = 1;
109 ret = btrfs_search_slot(&trans, root, &key, path, 0, 1);
110 if (ret) {
111 test_msg("Couldn't find extent ref\n");
112 btrfs_free_path(path);
113 return ret;
114 }
115
116 item = btrfs_item_ptr(path->nodes[0], path->slots[0],
117 struct btrfs_extent_item);
118 refs = btrfs_extent_refs(path->nodes[0], item);
119 btrfs_set_extent_refs(path->nodes[0], item, refs + 1);
120 btrfs_release_path(path);
121
122 key.objectid = bytenr;
123 if (parent) {
124 key.type = BTRFS_SHARED_BLOCK_REF_KEY;
125 key.offset = parent;
126 } else {
127 key.type = BTRFS_TREE_BLOCK_REF_KEY;
128 key.offset = root_objectid;
129 }
130
131 ret = btrfs_insert_empty_item(&trans, root, path, &key, 0);
132 if (ret)
133 test_msg("Failed to insert backref\n");
134 btrfs_free_path(path);
135 return ret;
136}
137
138static int remove_extent_item(struct btrfs_root *root, u64 bytenr,
139 u64 num_bytes)
140{
141 struct btrfs_trans_handle trans;
142 struct btrfs_key key;
143 struct btrfs_path *path;
144 int ret;
145
146 init_dummy_trans(&trans);
147
148 key.objectid = bytenr;
149 key.type = BTRFS_EXTENT_ITEM_KEY;
150 key.offset = num_bytes;
151
152 path = btrfs_alloc_path();
153 if (!path) {
154 test_msg("Couldn't allocate path\n");
155 return -ENOMEM;
156 }
157 path->leave_spinning = 1;
158
159 ret = btrfs_search_slot(&trans, root, &key, path, -1, 1);
160 if (ret) {
161 test_msg("Didn't find our key %d\n", ret);
162 btrfs_free_path(path);
163 return ret;
164 }
165 btrfs_del_item(&trans, root, path);
166 btrfs_free_path(path);
167 return 0;
168}
169
170static int remove_extent_ref(struct btrfs_root *root, u64 bytenr,
171 u64 num_bytes, u64 parent, u64 root_objectid)
172{
173 struct btrfs_trans_handle trans;
174 struct btrfs_extent_item *item;
175 struct btrfs_path *path;
176 struct btrfs_key key;
177 u64 refs;
178 int ret;
179
180 init_dummy_trans(&trans);
181
182 key.objectid = bytenr;
183 key.type = BTRFS_EXTENT_ITEM_KEY;
184 key.offset = num_bytes;
185
186 path = btrfs_alloc_path();
187 if (!path) {
188 test_msg("Couldn't allocate path\n");
189 return -ENOMEM;
190 }
191
192 path->leave_spinning = 1;
193 ret = btrfs_search_slot(&trans, root, &key, path, 0, 1);
194 if (ret) {
195 test_msg("Couldn't find extent ref\n");
196 btrfs_free_path(path);
197 return ret;
198 }
199
200 item = btrfs_item_ptr(path->nodes[0], path->slots[0],
201 struct btrfs_extent_item);
202 refs = btrfs_extent_refs(path->nodes[0], item);
203 btrfs_set_extent_refs(path->nodes[0], item, refs - 1);
204 btrfs_release_path(path);
205
206 key.objectid = bytenr;
207 if (parent) {
208 key.type = BTRFS_SHARED_BLOCK_REF_KEY;
209 key.offset = parent;
210 } else {
211 key.type = BTRFS_TREE_BLOCK_REF_KEY;
212 key.offset = root_objectid;
213 }
214
215 ret = btrfs_search_slot(&trans, root, &key, path, -1, 1);
216 if (ret) {
217 test_msg("Couldn't find backref %d\n", ret);
218 btrfs_free_path(path);
219 return ret;
220 }
221 btrfs_del_item(&trans, root, path);
222 btrfs_free_path(path);
223 return ret;
224}
225
226static int test_no_shared_qgroup(struct btrfs_root *root)
227{
228 struct btrfs_trans_handle trans;
229 struct btrfs_fs_info *fs_info = root->fs_info;
230 int ret;
231
232 init_dummy_trans(&trans);
233
234 test_msg("Qgroup basic add\n");
235 ret = btrfs_create_qgroup(NULL, fs_info, 5, NULL);
236 if (ret) {
237 test_msg("Couldn't create a qgroup %d\n", ret);
238 return ret;
239 }
240
241 ret = btrfs_qgroup_record_ref(&trans, fs_info, 5, 4096, 4096,
242 BTRFS_QGROUP_OPER_ADD_EXCL, 0);
243 if (ret) {
244 test_msg("Couldn't add space to a qgroup %d\n", ret);
245 return ret;
246 }
247
248 ret = insert_normal_tree_ref(root, 4096, 4096, 0, 5);
249 if (ret)
250 return ret;
251
252 ret = btrfs_delayed_qgroup_accounting(&trans, fs_info);
253 if (ret) {
254 test_msg("Delayed qgroup accounting failed %d\n", ret);
255 return ret;
256 }
257
258 if (btrfs_verify_qgroup_counts(fs_info, 5, 4096, 4096)) {
259 test_msg("Qgroup counts didn't match expected values\n");
260 return -EINVAL;
261 }
262
263 ret = remove_extent_item(root, 4096, 4096);
264 if (ret)
265 return -EINVAL;
266
267 ret = btrfs_qgroup_record_ref(&trans, fs_info, 5, 4096, 4096,
268 BTRFS_QGROUP_OPER_SUB_EXCL, 0);
269 if (ret) {
270 test_msg("Couldn't remove space from the qgroup %d\n", ret);
271 return -EINVAL;
272 }
273
274 ret = btrfs_delayed_qgroup_accounting(&trans, fs_info);
275 if (ret) {
276 test_msg("Qgroup accounting failed %d\n", ret);
277 return -EINVAL;
278 }
279
280 if (btrfs_verify_qgroup_counts(fs_info, 5, 0, 0)) {
281 test_msg("Qgroup counts didn't match expected values\n");
282 return -EINVAL;
283 }
284
285 return 0;
286}
287
288
289
290
291
292
293static int test_multiple_refs(struct btrfs_root *root)
294{
295 struct btrfs_trans_handle trans;
296 struct btrfs_fs_info *fs_info = root->fs_info;
297 int ret;
298
299 init_dummy_trans(&trans);
300
301 test_msg("Qgroup multiple refs test\n");
302
303
304 ret = btrfs_create_qgroup(NULL, fs_info, 256, NULL);
305 if (ret) {
306 test_msg("Couldn't create a qgroup %d\n", ret);
307 return ret;
308 }
309
310 ret = insert_normal_tree_ref(root, 4096, 4096, 0, 5);
311 if (ret)
312 return ret;
313
314 ret = btrfs_qgroup_record_ref(&trans, fs_info, 5, 4096, 4096,
315 BTRFS_QGROUP_OPER_ADD_EXCL, 0);
316 if (ret) {
317 test_msg("Couldn't add space to a qgroup %d\n", ret);
318 return ret;
319 }
320
321 ret = btrfs_delayed_qgroup_accounting(&trans, fs_info);
322 if (ret) {
323 test_msg("Delayed qgroup accounting failed %d\n", ret);
324 return ret;
325 }
326
327 if (btrfs_verify_qgroup_counts(fs_info, 5, 4096, 4096)) {
328 test_msg("Qgroup counts didn't match expected values\n");
329 return -EINVAL;
330 }
331
332 ret = add_tree_ref(root, 4096, 4096, 0, 256);
333 if (ret)
334 return ret;
335
336 ret = btrfs_qgroup_record_ref(&trans, fs_info, 256, 4096, 4096,
337 BTRFS_QGROUP_OPER_ADD_SHARED, 0);
338 if (ret) {
339 test_msg("Qgroup record ref failed %d\n", ret);
340 return ret;
341 }
342
343 ret = btrfs_delayed_qgroup_accounting(&trans, fs_info);
344 if (ret) {
345 test_msg("Qgroup accounting failed %d\n", ret);
346 return ret;
347 }
348
349 if (btrfs_verify_qgroup_counts(fs_info, 5, 4096, 0)) {
350 test_msg("Qgroup counts didn't match expected values\n");
351 return -EINVAL;
352 }
353
354 if (btrfs_verify_qgroup_counts(fs_info, 256, 4096, 0)) {
355 test_msg("Qgroup counts didn't match expected values\n");
356 return -EINVAL;
357 }
358
359 ret = remove_extent_ref(root, 4096, 4096, 0, 256);
360 if (ret)
361 return ret;
362
363 ret = btrfs_qgroup_record_ref(&trans, fs_info, 256, 4096, 4096,
364 BTRFS_QGROUP_OPER_SUB_SHARED, 0);
365 if (ret) {
366 test_msg("Qgroup record ref failed %d\n", ret);
367 return ret;
368 }
369
370 ret = btrfs_delayed_qgroup_accounting(&trans, fs_info);
371 if (ret) {
372 test_msg("Qgroup accounting failed %d\n", ret);
373 return ret;
374 }
375
376 if (btrfs_verify_qgroup_counts(fs_info, 256, 0, 0)) {
377 test_msg("Qgroup counts didn't match expected values\n");
378 return -EINVAL;
379 }
380
381 if (btrfs_verify_qgroup_counts(fs_info, 5, 4096, 4096)) {
382 test_msg("Qgroup counts didn't match expected values\n");
383 return -EINVAL;
384 }
385
386 return 0;
387}
388
389int btrfs_test_qgroups(void)
390{
391 struct btrfs_root *root;
392 struct btrfs_root *tmp_root;
393 int ret = 0;
394
395 root = btrfs_alloc_dummy_root();
396 if (IS_ERR(root)) {
397 test_msg("Couldn't allocate root\n");
398 return PTR_ERR(root);
399 }
400
401 root->fs_info = btrfs_alloc_dummy_fs_info();
402 if (!root->fs_info) {
403 test_msg("Couldn't allocate dummy fs info\n");
404 ret = -ENOMEM;
405 goto out;
406 }
407
408 root->fs_info->extent_root = root;
409
410
411
412
413
414 root->fs_info->tree_root = root;
415 root->fs_info->quota_root = root;
416 root->fs_info->quota_enabled = 1;
417
418
419
420
421
422 root->node = alloc_test_extent_buffer(root->fs_info, 4096);
423 if (!root->node) {
424 test_msg("Couldn't allocate dummy buffer\n");
425 ret = -ENOMEM;
426 goto out;
427 }
428 btrfs_set_header_level(root->node, 0);
429 btrfs_set_header_nritems(root->node, 0);
430 root->alloc_bytenr += 8192;
431
432 tmp_root = btrfs_alloc_dummy_root();
433 if (IS_ERR(tmp_root)) {
434 test_msg("Couldn't allocate a fs root\n");
435 ret = PTR_ERR(tmp_root);
436 goto out;
437 }
438
439 tmp_root->root_key.objectid = 5;
440 root->fs_info->fs_root = tmp_root;
441 ret = btrfs_insert_fs_root(root->fs_info, tmp_root);
442 if (ret) {
443 test_msg("Couldn't insert fs root %d\n", ret);
444 goto out;
445 }
446
447 tmp_root = btrfs_alloc_dummy_root();
448 if (IS_ERR(tmp_root)) {
449 test_msg("Couldn't allocate a fs root\n");
450 ret = PTR_ERR(tmp_root);
451 goto out;
452 }
453
454 tmp_root->root_key.objectid = 256;
455 ret = btrfs_insert_fs_root(root->fs_info, tmp_root);
456 if (ret) {
457 test_msg("Couldn't insert fs root %d\n", ret);
458 goto out;
459 }
460
461 test_msg("Running qgroup tests\n");
462 ret = test_no_shared_qgroup(root);
463 if (ret)
464 goto out;
465 ret = test_multiple_refs(root);
466out:
467 btrfs_free_dummy_root(root);
468 return ret;
469}
470
